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| author | Alexander Duyck <alexander.h.duyck@redhat.com> | 2015-05-07 07:11:45 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-05-12 17:39:26 +0300 |
| commit | 2ee52ad4962b32797bac33fa29ec8159e64c4ee3 (patch) | |
| tree | da72a00a2bbd4f8bfe0dcb3fc4dfedb9b93bc80d /drivers/net/ethernet/intel/igb/igb_main.c | |
| parent | 9451980a6646ed487efce04a9df28f450935683e (diff) | |
| download | linux-2ee52ad4962b32797bac33fa29ec8159e64c4ee3.tar.xz | |
igb: Don't use NETDEV_FRAG_PAGE_MAX_SIZE in descriptor calculation
This change updates igb so that it will correctly perform the descriptor
count calculation. Previously it was taking NETDEV_FRAG_PAGE_MAX_SIZE
into account with isn't really correct since a different value is used to
determine the size of the pages used for TCP. That is actually determined
by SKB_FRAG_PAGE_ORDER.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/intel/igb/igb_main.c')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_main.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index e63664649029..8a45ed7506c5 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -4974,6 +4974,7 @@ netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb, struct igb_tx_buffer *first; int tso; u32 tx_flags = 0; + unsigned short f; u16 count = TXD_USE_COUNT(skb_headlen(skb)); __be16 protocol = vlan_get_protocol(skb); u8 hdr_len = 0; @@ -4984,14 +4985,8 @@ netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb, * + 1 desc for context descriptor, * otherwise try next time */ - if (NETDEV_FRAG_PAGE_MAX_SIZE > IGB_MAX_DATA_PER_TXD) { - unsigned short f; - - for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) - count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); - } else { - count += skb_shinfo(skb)->nr_frags; - } + for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) + count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); if (igb_maybe_stop_tx(tx_ring, count + 3)) { /* this is a hard error */ |